The Warrior's Discovery marks the earliest event in Invincible's Earth timeline, set roughly around 1200 BC. A Celtic fighter stumbles upon a strange orb of energy in the mountains that grants him superhuman power and endless life, making him the world's first superhero, later known as The Immortal.
The Warrior's Discovery is recognized as the first event in Earth's chronology within Invincible, reaching back some three thousand years. It centers on a warrior of Celtic stock who, by pure chance, gains powers that will let him walk through the whole of human history.
Venturing high into the mountains, the Celtic fighter encountered a luminous blue spiral orb humming with an energy he had never seen. The instant he stretched toward it, the sphere loosed a beam that poured its power into him. He grasped none of it at the time, but the years revealed abilities no ordinary person should hold, culminating in the realization that he was, in fact, the first human ever to slip free of death. Down the centuries he slipped into role after role and name after name. He served as a knight, perhaps even in the ranks of King Arthur, carrying the armies under his command to victory, and far later he took on the identity of Abraham Lincoln, serving as the country's sixteenth president, until an assassin's bullet ended that life. His deathless nature simply returned him to the world to press on.
In time he set aside those borrowed lives and settled into something resembling a modern champion, calling himself The Immortal. Under that name he stood watch over Earth for a great span of years before finally choosing to step back and retire in the present day. His accidental awakening in the wasteland stands as the origin point of costumed heroism in this world, the first link in a chain that would eventually include the likes of Invincible himself.

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The Warrior's Discovery is the earliest event in Earth's chronology within Invincible, set around 1200 BC. It follows a Celtic warrior who stumbles upon a mysterious glowing orb in the mountains and gains superhuman power and immortality.
The Celtic warrior in The Warrior's Discovery eventually becomes The Immortal, taking on that identity after living through centuries of history under different names and roles.
Over the centuries, The Immortal serves as a knight, possibly in the ranks of King Arthur, and later takes on the identity of Abraham Lincoln, serving as the sixteenth president of the United States until he is assassinated. His immortality simply returns him to the world each time to continue on.
The Celtic warrior encounters a luminous blue spiral orb humming with unfamiliar energy high in the mountains. When he reaches for it, the orb releases a beam that pours its power into him, eventually revealing that he has become the first human to escape death.
The Warrior's Discovery marks the origin point of costumed heroism on Earth in Invincible, the first link in a chain that eventually includes heroes like Invincible himself. The Immortal, born from this event, stands watch over Earth for centuries before retiring in the present day.
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